Thesaurus
Synonyms & Antonyms of insidious
formal
causing harm in a way that is gradual or not easily noticed
- Most people with this insidious disease have no idea that they are infected.
- an insidious enemy
Synonyms & Near Synonyms for insidious
- beguiling,
- deceitful,
- deceiving,
- deceptive,
- deluding,
- delusive,
- delusory,
- fallacious,
- false,
- misleading,
- specious
- artful,
- crafty,
- cunning,
- devious,
- foxy,
- guileful,
- shady,
- shifty,
- slick,
- sly,
- sneaking,
- sneaky,
- subtile,
- subtle,
- trick,
- trickish,
- tricky,
- underhand,
- underhanded,
- wily
Antonyms & Near Antonyms for insidious
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“Insidious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/insidious. Accessed 22 Jun. 2021.
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Time Traveler for insidious
The first known use of insidious was in 1545
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